Pumping apparatus for boats



May 13, 1958' i G. c. BAXTER 2,834,312

. PUMPING.APPARATUS F OR BOATS Filed Sept. 25, 1953 5 Sheets-Sheet 1 IN VEN TOR,

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M y 13, 1958 G. .c. BAXTER 2,834,312

PUMPING APPARATUS FOR BOATS Filed Sept. 25, 1953 3 Sheets-Sheet 2 IN VEN TOR, wary; 6. Bax ier.

May 13, 1958 G. c. BAXTER PUMPING APPARATUS FOR BOATS 3 Sheets-Sheet 3 Filed Sept. 25, 1953 INVENTOR, add/ye. 635x791: BY

. lfiarneys.

United States" Patent 4 Claims. (Cl. 114-185) This invention relates to improvements in pumping apparatus for boats wherein the water stream from the propeller serves to create a suction whereby the water in the bottom of the boat is ejected.

The principal object of the present invention is the provision of a water ejector apparatus removably attached exteri-orly of a boat having a motor driven propeller, said ejector apparatus including a suction tube normally disposed in axial alignment with said propeller, and a tubular member interconnecting said suction tube with the bottom of the boat chamber.

Other objects are simplicity and economy of construction, ease and efliciency of operation, and adaptability for use with any boat that is propelled through the water.

With these objects in mind, as well as other objects which will appear during the course of the specification, reference will be had to the drawings wherein:

Fig. 1 is a side elevational view of a boat provided with an outboard motor of any of the many well known types.

Fig. 2 is a sectional view taken on line I III of Fig. 1.

'Fig. 3 is an enlarged rear elevation of the principal elements of the pumping apparatus.

Fig. 4 is a sectional view taken on line IV-IV of Fig. 3, with some parts left in elevation.

Fig. 5 is a sectional view taken on line V-V of Fig. 4.

Fig. 6 is a modified form showing the pumping apparatus as used with an inboard motor boat.

Fig. 7 is a plan view of the structure shown in Fig. 6.

Like reference characters refer to similar parts through the several views of the drawings and the numeral 10 designates a boat such as an open deck canoe provided with an outboard motor structure 12comprising motor 14 provided with a depending vertically disposed housing 16 carrying adjacent its lower end a propeller 18 driven by said motor 14 which drives shaft 20 having a bevel gear 22 which intermeshes with bevel gear 24 fixed to propeller shaft 26.

Integral with housing 16 and projecting outwardly above propeller 18 is an anti-cavitation plate 28. Anchored to plate 28 by means of a U-shaped bolt 30, is a clamp plate 32 having a socket 34 formed therein which clampingly hugs the extended end of plate 28. Plate 32 has an upwardly projecting lug 36 which is provided witha pair of drilled holes 38 through which the threaded legs 40 of U-shaped bolt 30 extend. The nuts 42 operatively mounted on the threaded legs 40 are adapted to draw the rebent portion of bolt 30 against housing 16 as the clamp plate 32 is clamped tightly against plate 28. Integral with the rear end of clamp plate 32 is a vertically disposed socket member 44 diametrically offset at its upper end to form a semicircular projection 46.

The pumping apparatus better shown in 1, 2, 3, 4 and 5 comprises a standard 50 rigidly attached at its lower end portion 52 to an angled suction tube 54 having a relatively long leg 56 disposed in parallel relation with said standard and a short leg 58 disposed at an angle to leg 56. Carried by tubular member 54 is a frustcconical tubular member 60 disposed parallel and concentric with leg 53. It will be noted that leg 58 extends a short distance into the intake or small end 62 of member 60 whereby a stream of water delivered to member 64 which passes over the gunwale 66 of the boat with 'its lower end positioned in the water in the bottom of the boat. Integral with the upper end portion of standard 50 is a bracket 68 inwhich is fixedly mounted a rod 70 having its lower portion protruding below said bracket to fit into socket member 44 with its semicircular member 72 intermeshing with semicircular member 46. The upper end of rod 70 is provided with a hand grip 74 also rivets 7 6 secure rod 70 to bracket 68. These semicircular members '72 and 46 interengage to secure the ejecting apparatus and the housing 16in fixed relation so that as the housing is oscillated during the steering of the boat, propeller 18 and tube 58 will remain in axial alignment to facilitate proper water ejection action at all times.

To facilitate better suction action by tube 60, it will be noted that its intake end 62 is flared outwardly. It will be further noted that the frusto-conical vacuum tube 6'!) is always positioned in the center of the water flow line created bythe propeller 18.

Reference will now be had to Figs. 6 and 7 wherein is shown the pumping apparatus as used inconjunction with an inboard motor boat wherein the motor 82 is mounted on the bottom of the boat and has a crank shaft 84 extending rearwardly therefrom through a bearing 86 mounted in the end wall 88 of the boat to the outside of the boat where it is provided with a suitable propeller 9i Mounted directly in front of said propeller is a rudder 92 which is fixedly mounted on shaft 94 which in turn is mounted in bearings 96 and 98 carried by said boat. A rudder arm 100 secured to shaft 94 is positioned within the boat in convenient reach of the operator.

The pumping apparatus for removing the water from the bottom of the boat is similar to that shown in the preferred form and is carried by the gunwale 102 of the boat 86 by means of a bracket 104, which is fastened to the boat by means of bolts 106. This bracket has a vertically disposed socket member 108 offset at its upper end portion to present an upwardly projecting semicircular member 110 adapted to engage depending semicircular member 72 of bracket 68 as rod 70 extends through socket 108.

Due to the relative relation of suction tube 45 and frusto-conical member 60, it is quite evident that the speed of the water tending to cause a suction in tube 54 will be increased by the flow of the water through 60. This suction might be obtained without the use of member 60 if the boat is moved at suificient forward speed through the water.

What I claim as new and desire to protect by Letters Patent is:

1. A water ejection apparatus for a propeller driven boat comprising a frusto-conical tube, means for mounting said tube on said boat in a position behind said propeller in the wake thereof, said conical tube being positioned with its smaller end forwardly, a suction tube fixed to said conical tube with its rearward end portion disposed concentrically within the forward portion of said conical tube, and a flexible tube having one end attached to the opposite end of said suction tube, the opposite end of said flexible tube being adapted to be placed in. the bilge of the boat.

2. A structure as set forth in claim 1 for use in connection with a boat which is steerable by turning said propeller on a vertical axis, and wherein said mounting means is adapted to engage a portion of said boat movable Patented May13,

by said'conical tube and suction tube are maintained substantially coaxial with said'propeller.

3. A structure as set forth in claim 1 for use in connection with a boat wherein said propeller is carried at the lower end of a vertically extending, axially oscillatable housing member, said housing member having an anticavitation plate fixed thereto and extending rearwardly over said propeller, and wherein said mounting means comprises a bracket member carrying said conical tube and having a socket formed therein to fit 'over the rearward end portion of .said anti-cavitation plate, and a U-bolt fixed in said bracket member and adapted to pass forwardly around said housing member.

4. A structure as set forth in claim 1 for use in conmotion with a boat wherein said propeller is carried at the lower end of a vertically extending, axially oscillatable housing. member, said housing member having an anticavitation plate fixed thereto and extending rearwardly over said propeller, and wherein said mounting means comprises a bracket member having a socket formed therein to fit over the rearward end portion of said anticavitation plate, a U-bolt fixed in said bracket member and adapted to extend forwardly around said housing member, said bracket member including a vertically disposed tubular portion with an upwardly extending semicylindrical section, and a second tubular member 'towhich said conical tube is attached, said second tubular member having a rod fixed therein and slidably inserted in the tubular portion of said bracket, and having a downwardly extending semi-cylindrical extension engageable with the extension of said bracket tube to prevent relative rotation of said tubular members, said rod extending upwardly to form a handle for detaching said conical and suctiontubes from said bracket.

References Cited in the file of this patent UNITED STATES PATENTS 1,900,180 Harvey Mar. 7, 1933 2,120,858 Davant June 14, 1938 2,230,958 Langdon Feb. 4, 1941 2,418,252 Engle Apr. 1, 1947 2,530,664 Pye Nov. 21, 1950 2,565,885 Rei-tz Aug. 28, 1951 2,684,635 Winkelman et a1. July 27, 1954 2,771,052 Halvenson Nov. 20, 1956 FOREIGN PATENTS 691,799 Great Britain May 20, 1953 

